How much did the M12 Motorway to Western Sydney Airport cost?
The M12 Motorway, also called the Western Sydney Airport Motorway, is a toll-free 16 km motorway linking Elizabeth Drive in the east with The Northern Road in the west, giving an intersection-free route to Western Sydney International Airport. It was built over about four years for the Australian and NSW governments at A$2.1 billion, opened to traffic in the early hours of Saturday 14 March 2026, and is due to be joined to the M7 by the Cecil Hills interchange in mid-2026.
Reported project cost
AUD 2.1 billion
Approximately $1.35 billion
Cost basis: 2025
AdvanstraCC BY-SA 3.0
Cost evidence
Basis of the published figure
Reported project cost2025
Project metrics
Key dimensions
- Total lengthNSW Government
- 16 km
Project record
Opened or launched
ABC News14 March 2026